| 释义 |
knock out obj MAKE UNCONSCIOUSknock obj out v adv [M]to hit (someone) so that they become unconscious, or (of a drug) to cause (someone) to go to sleep击昏（药物）使入睡His fall from the ladder knocked him out.他从梯子上跌下来，昏了过去。She hit her head on the ceiling and knocked herself out.她把头撞在天花板上，昏了过去。(fig. ) If you carry on working like this, you'll knock yourself out (= make yourself ill with tiredness).你如果继续这么干下去，会累垮的。The sleeping tablets knocked him out (= made him go to sleep) for 18 hours.安眠药使他睡了18个小时。If something such as a piece of equipment is knocked out by something else, it is made useless, damaged or destroyed.使无用;毁坏The surge in the power supply knocked out all the computers.供电的电流冲击毁坏了所有的电脑。Enemy aircraft have knocked out 25 tanks.敌机摧毁了25辆坦克。[KNOCKOUT ]
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